Rotary engine.



No. 341,425. PATENTED JAN. 15, 1907. F. NELSON.

ROTARY ENGINE.

APPLICATION FILED APR. 6, 1906.

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PATENTED JAN. 15, 1907. F. NELSON. ROTARY ENGINE. APPLICATION FI LED APR. 6. 1906.

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PATENTED; JAN. 15, 1907.

F NEL SON. ROTARY ENGINE.

. APPLICATION FILED APR. 6. 1906.

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UNITED STATES PATENT OFFICE. v

FREDERICK NELSON, OF DRISCOLL, NORTH DAKOTA.

ROTARY ENGINE.

No. s41,425.-

Specification of Letters Patent.

Patented Jan. 15, 1907.-

Application filed April 6, 1906. Serial No. 310,253.

To all whom it may concern:

Be it known that I, FREDERICK NELSON, a citizen of the United States, and a resident of Driscoll, in the county of Burleigh and State of North Dakota, have invented a new and Improved Rotary Engine, of which the fol lowing is a full, clear, and exact description.

The object of the invention is to provide a new and improved rotary engine which is simple and durable in construction, very effective in operation, easily reversed, and arranged to utilize the motive agent to the fullest advantage' The invention consists of novel features and parts and combinations of the same, which will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this-specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the improvement. Fig. 2 is a plan view of the same. Fig. 3 is a side elevation of the improvement, showing parts in section and parts broken out. Fig. 4 is a sectional side elevationvof the cylinder. Fig. 5 is a sectional plan view of the improvement on the line 5 5 of Fig. 1, and Fig. 6 is an enlarged rear face view of the motiveagentcontrolling valve.

The cylinder A of the rotary engine is provided with intersecting bores A A in which are mounted to rotate the rotators B and B in rolling contact with each other, and provided with shafts C and C, j ournaled in the heads of the cylinder A, as plainly illustrated in Fig. 5. The outer ends of the shafts C are provided with pulleys C for transmitting the power of the engine to other machinery. The rotators B and B are provided on their peripheral faces with gear-teeth B B in mesh with each other, so that the rotators rotate in unison with each other. The rotator B is provided with a diametrically-disposed integral piston-heads B adapted to pass into recesses B formed in the peripheral face of the rotator B, and the latter is provided with diametrically-disposed piston-heads B, adapted to pass into recesses B formed on the peripheral face of the rotator B. By reference to Fig. 3 it will be seen that the pistonheads B stand at right angles to the recesses B and in a like manner the piston-heads B are arranged at right angles to the recesses B", so that the piston-heads B B alternately register with their recesses B B when the engine is running. Each of the pistonheads B is provided with sectional packingplates D and pressed on at the piston-heads by springs E, and similar springs E engage the packing-plates at the faces of the rotators, as will be'readily understood by reference to Fig. 5. Packing-plates D are arranged in recesses E formed in the cylinderheads of the cylinder A (see Figs. 4 and 5) of said packing-plates D, and pressed on by springs E to hold the packing-plates in contact with the faces of the rotators B and B at points between the shafts C and C. By the arrangement of the packing-plates D and D shown and described leakage of the m0- tive agent is prevented.

In order to control the admission and exhaust of the motive agent to and from the cylinder A, a valve F is provided having a casing F, in which is mounted to be turned a cylindrical valve F provided with ports a and 1), extending transversely through the valve, which latter is also provided at its rear face with a cavity 0. Into the front end of the casing F leads a pipe G, connected with a boiler or other source of motive-agent supply, and from the rear end of the casing F leads an exhaust-pipe H for carrying off the eX- haust motive agent. From the rear end of the casing F also extend the pipes I and I, opening into the cylinder A at the points of intersection of the bores A and A that is, the pipe I opens into the cylinder A immediately above the point of rolling contact of the rotators B and B, while the pipe I opens into the cylinder at a distance below the point of contact of the rotators B and B. The inner ends of the pipes I and I are adapted to register with the ports a and I), while the cavity 0 is adapted to register one of the ports a or b with the exhaust-pipe H. Thus as shown in Fig. 3, the port a registers at a time with the pipe I, while the pipe I is connected by the cavity 0 with the exhaustpipe H; but when it is desired to reverse the engine then the valve F is turned so as to move the port I) in register with the pipe I and to connect the pipe I by the cavity 0 with the exhaust-pipe H. The valve F is turned into either of the two positions mentioned by the operator, and for this purpose a shaft F of the valve F is provided at its outer end with a handle J under the control of the operator and provided with a lockingbolt J, adapted to engage a notched segment inder A either by way of the pipe I or by the pipe I, as above described.

The operation is as follows: When the several parts are in the position illustrated in the drawings, then the steam or other live motive agent passes by way of the pipe G,

the casing F, the port a, and pipe I into the cylinder A to exert pressure against the'piston-heads B B to rotate the rotators B and B in the direction of the arrows a and a. Now when next the piston-head passes the inner end of the pipe I then another impulse is given to. this piston-head B and its rotator B, and in a like manner when the next fol lowing piston-head B passes the pipe I then another impulse is given to this piston-head B and its rotator B. When the piston-head B or B has passed the inner end of the pipe I, then an exhaust takes place from the cylinder A or A by way of the pipe I, the cavity 0, and the exhaust-pipe H. When it is desired to reverse the enginethat is, to

rotate the'rotators B and B in the inverse directions of the arrows a and a th.en it is only necessary for the operator to swing the handle J over from the left to the right so that the position of the valve F is changed, and the motive agent now passes into the cylinder A by way of the pipe I, and consequently the motive agent now successively exerts pressure on the piston-heads B B to rotate the rotators B and B in the inverse directions of the arrows a o The exhaust in the rear of the piston-heads B and. B now takes place whenever a piston-head passes the inner end of the pipe, so that the exhaust can pass by way of the said pipe I and cavity 0 into the exhaust-pipe H to be carried off to a suitable place of discharge.

The rotary engine shown and described is very simple and durable in construction,

composed of comparatively few parts, not liable to get easily out of order, and the engine can be conveniently reversed by the operator whenever it is desired to do so.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A rotary engine comprising a cylinder having intersecting bores, rotators mounted to turn in the said bores and geared together to rotate in unison, each of the rotators having piston-heads fitting recesses in the other rotator, spring-pressed packing-plates between the ends of the cylinder and the rotators and means for controlling the motive agent to and from the said cylinder.

2. A rotary engine comprising a cylinder having intersecting bores, rotators mounted to turn in the said bores and geared together to rotate in unison, spring-pressed packingplates between the ends of the cylinder and the rotators each of the rotators having piston-headsifitting recesses in the other rotator at the points of intersection of the said bores.

3. A rotary engine comprising a cylinder having intersecting bores, rotators mounted .to turn in the said bores and geared together to rotate in unison, each of the rotators having piston-heads fitting recesses in the other rotator, and each rotator having springpressed packing-plates between the rotators and the ends of the cylinder, and means for controlling the motive agent to and from the said cylinder.

' 4. A rotary engine comprising a cylinder having intersecting bores, rotators mounted to turn in the said bores and geared together to rotate in unison, each of the rotators having piston-heads fitting recesses in the other rotator, and spring-pressed packing-plates in grooves in the cylinder-heads of the said cylinders pressing the faces of the said rotators between the shafts thereof.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRED. NELSON.

Witnesses CHAS. TRAINER, J AMES G. SPITZER. 

